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AR# 44908

14.x Timing - Timing score zero in Design Summary fails in Timing Analyzer

Description

After I complete PAR the timing score in the Design Summary reports zero, but Timing Analyzer reports failing paths. Am I meeting timing or not?

Solution

The timing score of zero in the Design Summary comes from the PAR report, which does not run trace with unconstrained paths option enabled.

It is good practice to run Timing Analyzer and add a TIG for any failing path that you are certain will notbe an issue.
AR# 44908
Date Created 11/14/2012
Last Updated 02/19/2013
Status Active
Type General Article
Tools
  • ISE Design Suite - 13.3
  • ISE Design Suite - 12
  • ISE Design Suite - 13
  • ISE Design Suite - 14